/*
 * Copyright 2024-2025 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.springframework.data.elasticsearch.annotations;

/**
 * @author Haibo Liu
 * @since 5.4
 */
public enum KnnSimilarity {
	L2_NORM("l2_norm"),
	DOT_PRODUCT("dot_product"),
	COSINE("cosine"),
	MAX_INNER_PRODUCT("max_inner_product"),
	DEFAULT("");

	private final String similarity;

	KnnSimilarity(String similarity) {
		this.similarity = similarity;
	}

	public String getSimilarity() {
		return similarity;
	}
}
